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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 6541995939

Certificate GIA 6541995939

Diamond specifications and retailer prices

From $12,803 SGD
$10,011 USD
As of November 1, 2026
Save $4,472 SGD (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $17,275 SGD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded F 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 6541995939. Listed at 4 retailers as of November 1, 2026, with prices from $12,803 to $17,275, a $4,472 spread on the same certified stone. 77 Diamonds lists it at $17,275. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541995939
Dimensions11.57 × 5.99 × 3.71 mm
L/W Ratio1.93
Top View
11.57 mm5.99 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541995939
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.9%

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: $17,275 SGD|Low: $11,623 SGD|High: $18,199 SGD|Avg: $14,667 SGD|+0.9%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10$11,623 SGD
Retailer 8$12,303 SGD
Retailer 2$12,803 SGD
Retailer 5$13,563 SGD
Retailer 11$14,023 SGD
Retailer 6$14,309 SGD
Retailer 3$15,359 SGD
Retailer 4$15,747 SGD
Retailer 9$16,017 SGD
77 Diamonds$17,275 SGD
Retailer 7$18,199 SGD

35 data points across 11 retailers

4 retailers$12,803 SGD to $17,275 SGD

B+
Cheapest Retailer
-
$12,803 SGD
$10,011 USD
B+
Retailer 2
-
$13,563 SGD
$10,605 USD
View
B
Retailer 3
-
$14,309 SGD
$11,188 USD
View
Most Expensive
B
77 Diamonds
MQZHUVJPYD4 · Nov 1
$17,275 SGD
£10,636 GBP
View
3 more retailers have this diamond
Prices start from $12,803 SGDSave up to $4,472 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.

B+
1.51ct Marquise
$12,803 SGD