Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 2554554972

Certificate GIA 2554554972

Diamond specifications and retailer prices

From $12,929 AUD
$9,061 USD
As of November 1, 2026
Save $8,886 AUD (41%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $23,280 AUD at NZ Jewellers · As of September 18, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2554554972. Listed at 25 retailers as of November 1, 2026, with a 69% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.93°
Pavilion angle39°
OriginNatural
Grading LabGIA
CertificateGIA 2554554972
Dimensions10.88 × 5.79 × 3.78 mm
L/W Ratio1.88
Culet sizeNone
Top View
10.88 mm5.79 mm1.50 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554554972
Side View
Table 61.0%Crown 40.93°Girdle: VTN-VTKPavilion 39°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $16,785 AUD|Low: $11,115 AUD|High: $22,078 AUD|Avg: $15,356 AUD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 2, 2026
Retailer 15$12,268 AUD
Retailer 11$12,929 AUD
Retailer 5$12,961 AUD
Retailer 6$13,304 AUD
Retailer 20$13,339 AUD
Retailer 8$13,827 AUD
Retailer 21$13,966 AUD
Retailer 7$14,898 AUD
Retailer 12$15,169 AUD
Retailer 2$15,311 AUD
Retailer 4$15,414 AUD
Retailer 22$15,522 AUD
Retailer 18$15,560 AUD
Retailer 3$15,759 AUD
Retailer 9$16,195 AUD
Retailer 14$16,195 AUD
Retailer 13$16,656 AUD
Retailer 10$16,738 AUD
Retailer 1$16,785 AUD
Retailer 19$16,995 AUD
Retailer 17$20,521 AUD
Retailer 16$21,815 AUD

24 data points across 22 retailers

25 retailers$12,929 AUD to $21,815 AUD

B+
Cheapest Retailer
-
$12,929 AUD
$9,061 USD
B+
Retailer 2
-
$12,961 AUD
$9,083 USD
View
B+
Retailer 3
-
$13,094 AUD
View
B+
Retailer 4
-
$13,304 AUD
$9,324 USD
View
B+
Retailer 5
-
$13,339 AUD
$9,348 USD
View
B+
Retailer 6
-
$13,827 AUD
$9,690 USD
View
B+
Retailer 7
-
$13,966 AUD
$9,788 USD
View
Final sale: no returns
Retailer 8
-
$13,968 AUD
$9,789 USD
View
Price last confirmed 21 days ago
B
Retailer 9
-
$14,898 AUD
$10,441 USD
View
B+
Retailer 10
-
$15,169 AUD
£8,371 GBP
View
B
Retailer 11
-
$15,311 AUD
View
B
Retailer 12
-
$15,414 AUD
$10,803 USD
View
Retailer 13
-
$15,522 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$15,560 AUD
$10,905 USD
View
Retailer 15
-
$15,759 AUD
$11,044 USD
View
Price last confirmed 22 days ago
B
Retailer 16
-
$16,195 AUD
$11,350 USD
View
B
Retailer 17
-
$16,195 AUD
$11,350 USD
View
B
Retailer 18
-
$16,656 AUD
$11,673 USD
View
B
Retailer 19
-
$16,738 AUD
$11,730 USD
View
B
Retailer 20
-
$16,785 AUD
€11,203 EUR
View
B
Retailer 21
-
$16,995 AUD
$11,910 USD
View
Retailer 22
-
$17,461 AUD
$12,237 USD
View
Price last confirmed 48 days ago
B
Retailer 23
-
$20,521 AUD
ZAR 232,333 ZAR
View
B
Retailer 24
-
$21,815 AUD
£12,038 GBP
View
Most Expensive
NZ Jewellers
02c2926f-3f2e-4ef0-89ee-d0ef006a7298 · Sep 18
$23,280 AUD
$16,315 USD
View
Price last confirmed 45 days ago
24 more retailers have this diamond
Prices start from $12,929 AUDSave up to $8,886 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.50ct Marquise
$12,929 AUD