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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 3555246295

Certificate GIA 3555246295

Diamond specifications and retailer prices

From $14,282 AUD
$10,009 USD
As of November 1, 2026
Save $11,374 AUD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $25,656 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct 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 3555246295. Listed at 19 retailers as of October 30, 2026, with prices from $14,282 to $25,656, a $11,374 spread on the same certified stone. NZ Jewellers lists it at $25,656. 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

1.51
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.76°
Pavilion angle37.56°
OriginNatural
Grading LabGIA
CertificateGIA 3555246295
Dimensions11.23 × 6.00 × 3.59 mm
L/W Ratio1.87
Top View
11.23 mm6.00 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555246295
Side View
Table 60.0%Crown 40.76°Girdle: STK-VTKPavilion 37.56°Culet: NoneDepth 59.8%

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: $25,656 AUD|Low: $12,828 AUD|High: $25,656 AUD|Avg: $18,419 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 3$14,282 AUD
Retailer 10$15,393 AUD
Retailer 13$15,393 AUD
Retailer 6$16,639 AUD
Retailer 12$16,676 AUD
Retailer 9$16,729 AUD
Retailer 11$16,933 AUD
Retailer 5$17,965 AUD
Retailer 2$18,527 AUD
Retailer 4$19,242 AUD
Retailer 8$22,615 AUD
Retailer 7$24,040 AUD
NZ Jewellers$25,656 AUD

45 data points across 13 retailers

19 retailers$14,282 AUD to $25,656 AUD

B+
Cheapest Retailer
-
$14,282 AUD
$10,009 USD
B+
Retailer 2
-
$15,196 AUD
$10,650 USD
View
B+
Retailer 3
-
$15,393 AUD
$10,788 USD
View
B
Retailer 4
-
$15,393 AUD
$10,788 USD
View
Final sale: no returns
B
Retailer 5
-
$15,522 AUD
$10,878 USD
View
B+
Retailer 6
-
$16,639 AUD
£9,182 GBP
View
B+
Retailer 7
-
$16,676 AUD
$11,687 USD
View
Retailer 8
-
$16,729 AUD
View
Price last confirmed 10 days ago
B
Retailer 9
-
$16,933 AUD
$11,867 USD
View
B
Retailer 10
-
$17,965 AUD
$12,590 USD
View
B
Retailer 11
-
$17,965 AUD
$12,590 USD
View
B
Retailer 12
-
$18,334 AUD
$12,849 USD
View
B
Retailer 13
-
$18,527 AUD
€12,366 EUR
View
B
Retailer 14
-
$18,564 AUD
$13,010 USD
View
B
Retailer 15
-
$19,242 AUD
$13,485 USD
View
Retailer 16
-
$20,251 AUD
$14,192 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
$22,615 AUD
ZAR 256,042 ZAR
View
B
Retailer 18
-
$24,040 AUD
£13,266 GBP
View
Most Expensive
B
NZ Jewellers
d9c19b02-f416-4506-8b76-2211e60f9434 · Oct 30
$25,656 AUD
$17,980 USD
View
18 more retailers have this diamond
Prices start from $14,282 AUDSave up to $11,374 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+
1.51ct Marquise
$14,282 AUD