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Marquise|Natural|GIA

1.51ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 6565040217

Certificate GIA 6565040217

Diamond specifications and retailer prices

From $10,830 SGD
$8,468 USD
As of November 1, 2026
Save $7,236 SGD (40%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $20,801 SGD at NZ Jewellers · As of September 20, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565040217. Listed at 17 retailers as of November 1, 2026, with a 67% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565040217
Dimensions12.05 × 6.05 × 3.39 mm
L/W Ratio1.99
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud
Top View
12.05 mm6.05 mm1.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565040217
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 56.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,573 SGD|Low: $9,162 SGD|High: $21,308 SGD|Avg: $12,472 SGD|-14.5%
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
November 2, 2026
Retailer 5$9,233 SGD
Retailer 7$9,644 SGD
Retailer 6$10,219 SGD
Retailer 2$10,830 SGD
Retailer 4$11,566 SGD
Retailer 12$11,568 SGD
Retailer 14$11,664 SGD
Retailer 8$11,686 SGD
Retailer 9$12,549 SGD
Retailer 3$13,633 SGD
Retailer 15$13,633 SGD
Retailer 13$14,052 SGD
Retailer 16$14,081 SGD
Retailer 1$14,573 SGD
Retailer 11$15,224 SGD
Retailer 10$18,066 SGD

30 data points across 16 retailers

17 retailers$10,830 SGD to $18,066 SGD

Retailer 1
-
$9,233 SGD
HK$56,400 HKD
Price last confirmed 31 days ago
Retailer 2
-
$10,219 SGD
View
Price last confirmed 31 days ago
A
Retailer 3
-
$10,830 SGD
$8,468 USD
View
B+
Retailer 4
-
$11,566 SGD
$9,044 USD
View
Final sale: no returns
B+
Retailer 5
-
$11,568 SGD
$9,045 USD
View
B+
Retailer 6
-
$11,664 SGD
$9,120 USD
View
B+
Retailer 7
-
$11,686 SGD
A$14,058 AUD
View
Retailer 8
-
$12,437 SGD
$9,725 USD
View
Price last confirmed 41 days ago
B+
Retailer 9
-
$12,549 SGD
£7,726 GBP
View
B+
Retailer 10
-
$13,633 SGD
$10,660 USD
View
B+
Retailer 11
-
$13,633 SGD
$10,660 USD
View
B
Retailer 12
-
$13,702 SGD
$10,714 USD
View
Retailer 13
-
$14,052 SGD
$10,988 USD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
$14,081 SGD
$11,010 USD
View
B+
Retailer 15
-
$14,573 SGD
€10,852 EUR
View
B
Retailer 16
-
$18,066 SGD
£11,123 GBP
View
Most Expensive
NZ Jewellers
b9fa1f04-0e00-4244-9a85-fdb31e76653a · Sep 20
$20,801 SGD
$16,265 USD
View
Price last confirmed 43 days ago
16 more retailers have this diamond
Prices start from $10,830 SGDSave up to $7,236 SGD

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.

A
1.51ct Marquise
$10,830 SGD