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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 2546559967

Certificate GIA 2546559967

Diamond specifications and retailer prices

From $11,281 AUD
CA$10,980 CAD
As of November 2, 2026
Save $1,912 AUD (14%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $21,483 AUD at NZ Jewellers · As of September 21, 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 J 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 2546559967. Listed at 6 retailers as of November 2, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.76°
Pavilion angle38.69°
OriginNatural
Grading LabGIA
CertificateGIA 2546559967
Dimensions11.06 × 5.96 × 3.73 mm
L/W Ratio1.86
Top View
11.06 mm5.96 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546559967
Side View
Table 59.0%Crown 40.76°Girdle: MED-THKPavilion 38.69°Culet: NoneDepth 62.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $11,281 AUD|Low: $9,920 AUD|High: $17,924 AUD|Avg: $12,525 AUD|-1.6%
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
October 15, 2026
Retailer 8$9,920 AUD
Retailer 3$10,058 AUD
Retailer 20$10,716 AUD
Retailer 2$10,742 AUD
Retailer 10$10,830 AUD
Retailer 1$11,281 AUD
Retailer 9$11,444 AUD
Retailer 12$11,829 AUD
Retailer 17$12,033 AUD
Retailer 18$12,054 AUD
Retailer 16$12,484 AUD
Retailer 4$12,785 AUD
Retailer 5$12,785 AUD
Retailer 13$13,156 AUD
Retailer 14$13,193 AUD
Retailer 6$13,213 AUD
Retailer 15$13,657 AUD
Retailer 7$14,145 AUD
Retailer 11$15,997 AUD
Retailer 19$17,924 AUD

6 data points across 20 retailers

6 retailers$11,281 AUD to $13,193 AUD

B
Cheapest Retailer
-
$11,281 AUD
CA$10,980 CAD
B
Retailer 2
-
$11,829 AUD
$8,290 USD
View
Retailer 3
-
$12,054 AUD
View
Price last confirmed 39 days ago
B
Retailer 4
-
$13,193 AUD
$9,246 USD
View
Retailer 5
-
$14,145 AUD
$9,913 USD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
dbf1ec4b-bdda-4646-a696-009b16e16771 · Sep 21
$21,483 AUD
$15,056 USD
View
Price last confirmed 42 days ago
5 more retailers have this diamond
Prices start from $11,281 AUDSave up to $1,912 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
$11,281 AUD