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Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5566477733

Certificate GIA 5566477733

Diamond specifications and retailer prices

From $8,523 SGD
As of November 5, 2026
Save $3,558 SGD (29%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $12,080 SGD at Diamonds Direct · As of November 6, 2026
View at Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I 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 5566477733. Listed at 12 retailers as of November 5, 2026, with prices from $8,523 to $12,080, a $3,558 spread on the same certified stone. Diamonds Direct lists it at $12,080. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle38.11°
OriginNatural
Grading LabGIA
CertificateGIA 5566477733
Dimensions11.22 × 5.93 × 3.64 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.22 mm5.93 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566477733
Side View
Table 59.0%Crown 39.9°Girdle: MED-THKPavilion 38.11°Culet: NoneDepth 61.5%

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 5
Current: $12,080 SGD|Low: $8,523 SGD|High: $12,262 SGD|Avg: $10,009 SGD|-1.5%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 11$8,523 SGD
Retailer 3$8,920 SGD
Retailer 4$8,983 SGD
Retailer 8$9,055 SGD
Retailer 12$9,085 SGD
Retailer 5$9,142 SGD
Retailer 2$9,385 SGD
Retailer 10$10,623 SGD
Retailer 9$10,708 SGD
Retailer 6$10,777 SGD
Retailer 7$10,805 SGD
Diamonds Direct$12,080 SGD

35 data points across 12 retailers

12 retailers$8,523 SGD to $12,080 SGD

A
Cheapest Retailer
-
$8,523 SGD
A
Retailer 2
-
$8,920 SGD
View
B+
Retailer 3
-
$8,983 SGD
View
B+
Retailer 4
-
$9,055 SGD
View
B+
Retailer 5
-
$9,085 SGD
View
B+
Retailer 6
-
$9,142 SGD
View
B+
Retailer 7
-
$9,385 SGD
View
B+
Retailer 8
-
$10,623 SGD
View
B+
Retailer 9
-
$10,708 SGD
View
B+
Retailer 10
-
$10,777 SGD
View
B+
Retailer 11
-
$10,805 SGD
View
Most Expensive
B
Diamonds Direct
1129909 · Nov 6
$12,080 SGD
$9,426 USD
View
11 more retailers have this diamond
Prices start from $8,523 SGDSave up to $3,558 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
$8,523 SGD