CaratHunter
Plans
Marquise|Natural|GIA

1.51ct L SI1 Marquise Natural Diamond

EX • L/SI1 • GIA 3545615128

Certificate GIA 3545615128

Diamond specifications and retailer prices

From $4,314 SGD
As of November 6, 2026
Save $2,176 SGD (34%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,490 SGD at 77 Diamonds · As of November 6, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545615128. Listed at 4 retailers as of November 6, 2026, with prices from $4,314 to $6,490, a $2,176 spread on the same certified stone. 77 Diamonds lists it at $6,490. 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
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3545615128
Dimensions11.37 × 5.98 × 3.78 mm
L/W Ratio1.90
Top View
11.37 mm5.98 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3545615128
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.1%

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 6
Current: $6,490 SGD|Low: $4,123 SGD|High: $10,228 SGD|Avg: $6,141 SGD|+0.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$4,123 SGD
Retailer 2$4,314 SGD
Retailer 4$4,997 SGD
Retailer 3$5,388 SGD
Retailer 8$5,647 SGD
77 Diamonds$6,490 SGD
Retailer 6$7,901 SGD
Retailer 7$10,228 SGD

35 data points across 8 retailers

4 retailers$4,314 SGD to $6,490 SGD

B+
Cheapest Retailer
-
$4,314 SGD
B
Retailer 2
-
$4,997 SGD
View
B
Retailer 3
-
$5,388 SGD
View
Most Expensive
B
77 Diamonds
MQMBZ4AH8KPW · Nov 6
$6,490 SGD
£3,987 GBP
View
3 more retailers have this diamond
Prices start from $4,314 SGDSave up to $2,176 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
$4,314 SGD