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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 5553731926

Certificate GIA 5553731926

Diamond specifications and retailer prices

From $11,451 SGD
$8,957 USD
As of October 31, 2026
Save $7,008 SGD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $18,459 SGD 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553731926. Listed at 9 retailers as of October 30, 2026, with prices from $11,451 to $18,459, a $7,008 spread on the same certified stone. NZ Jewellers lists it at $18,459. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553731926
Dimensions10.94 × 5.98 × 3.80 mm
L/W Ratio1.83
Top View
10.94 mm5.98 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553731926
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

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: Oct 31
Current: $18,459 SGD|Low: $11,451 SGD|High: $18,614 SGD|Avg: $13,453 SGD|-0.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$11,451 SGD
Retailer 5$11,480 SGD
Retailer 6$11,570 SGD
Retailer 9$12,268 SGD
Retailer 2$12,391 SGD
Retailer 8$13,244 SGD
Retailer 7$13,447 SGD
Retailer 3$17,297 SGD
NZ Jewellers$18,459 SGD

18 data points across 9 retailers

9 retailers$11,451 SGD to $18,459 SGD

A
Cheapest Retailer
-
$11,451 SGD
$8,957 USD
A
Retailer 2
-
$11,480 SGD
$8,980 USD
View
A
Retailer 3
-
$11,570 SGD
$9,050 USD
View
Retailer 4
-
$12,268 SGD
A$14,764 AUD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$12,391 SGD
£7,632 GBP
View
B+
Retailer 6
-
$13,244 SGD
$10,360 USD
View
B+
Retailer 7
-
$13,447 SGD
$10,519 USD
View
B+
Retailer 8
-
$17,297 SGD
£10,654 GBP
View
Most Expensive
B
NZ Jewellers
5382c10c-e26f-43bf-a2f9-6991835ace68 · Oct 30
$18,459 SGD
$14,439 USD
View
8 more retailers have this diamond
Prices start from $11,451 SGDSave up to $7,008 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
$11,451 SGD