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Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6545340711

Certificate GIA 6545340711

Diamond specifications and retailer prices

From $10,791 SGD
$8,441 USD
As of October 30, 2026
Save $9,596 SGD (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $20,387 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545340711. Listed at 18 retailers as of October 30, 2026, with prices from $10,791 to $20,387, a $9,596 spread on the same certified stone. NZ Jewellers lists it at $20,387. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545340711
Dimensions11.06 × 5.88 × 3.92 mm
L/W Ratio1.88
Top View
11.06 mm5.88 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545340711
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.6%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $20,387 SGD|Low: $10,658 SGD|High: $20,387 SGD|Avg: $13,973 SGD
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
Retailer 14
Retailer 15
October 31, 2026
Retailer 3$10,791 SGD
Retailer 4$11,646 SGD
Retailer 11$12,232 SGD
Retailer 15$12,232 SGD
Retailer 5$12,336 SGD
Retailer 12$12,447 SGD
Retailer 7$13,045 SGD
Retailer 10$13,252 SGD
Retailer 2$13,391 SGD
Retailer 14$13,455 SGD
Retailer 13$15,290 SGD
Retailer 8$15,413 SGD
Retailer 6$16,098 SGD
Retailer 9$19,207 SGD
NZ Jewellers$20,387 SGD

40 data points across 15 retailers

18 retailers$10,791 SGD to $20,387 SGD

A
Cheapest Retailer
-
$10,791 SGD
$8,441 USD
A
Retailer 2
-
$11,318 SGD
$8,853 USD
View
A
Retailer 3
-
$11,350 SGD
$8,878 USD
View
A
Retailer 4
-
$11,465 SGD
A$13,797 AUD
View
A
Retailer 5
-
$11,646 SGD
$9,110 USD
View
B+
Retailer 6
-
$12,232 SGD
$9,568 USD
View
Final sale: no returns
A
Retailer 7
-
$12,232 SGD
$9,568 USD
View
B+
Retailer 8
-
$12,447 SGD
$9,736 USD
View
B+
Retailer 9
-
$13,045 SGD
$10,204 USD
View
B+
Retailer 10
-
$13,252 SGD
$10,366 USD
View
B+
Retailer 11
-
$13,391 SGD
£8,248 GBP
View
B+
Retailer 12
-
$13,455 SGD
$10,525 USD
View
B+
Retailer 13
-
$15,290 SGD
$11,960 USD
View
Retailer 14
-
$15,290 SGD
$11,960 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$15,413 SGD
€11,482 EUR
View
Retailer 16
-
$16,098 SGD
$12,592 USD
View
Price last confirmed 16 days ago
B
Retailer 17
-
$19,207 SGD
£11,830 GBP
View
Most Expensive
B
NZ Jewellers
b2489fcf-b846-4fc4-a115-469532cfdb69 · Oct 30
$20,387 SGD
$15,947 USD
View
17 more retailers have this diamond
Prices start from $10,791 SGDSave up to $9,596 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
$10,791 SGD