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Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2564368871

Certificate GIA 2564368871

Diamond specifications and retailer prices

From $12,123 SGD
As of November 1, 2026
Save $9,607 SGD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $21,730 SGD at With Clarity · As of November 1, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564368871. Listed at 16 retailers as of November 1, 2026, with prices from $12,123 to $21,730, a $9,607 spread on the same certified stone. With Clarity lists it at $21,730. 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

1.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.9°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 2564368871
Dimensions11.76 × 5.65 × 3.59 mm
L/W Ratio2.08
Culet sizeNone
Top View
11.76 mm5.65 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564368871
Side View
Table 58.0%Crown 39.9°Girdle: STK-VTKPavilion 39.78°Culet: NDepth 63.5%

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: $15,490 SGD|Low: $12,123 SGD|High: $21,730 SGD|Avg: $14,938 SGD|+0.4%
Retailer 1
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
With Clarity
November 2, 2026
Retailer 6$12,123 SGD
Retailer 2$12,725 SGD
Retailer 10$12,968 SGD
Retailer 7$13,060 SGD
Retailer 11$13,124 SGD
Retailer 15$13,159 SGD
Retailer 14$13,403 SGD
Retailer 4$13,416 SGD
Retailer 8$13,417 SGD
Retailer 5$15,441 SGD
Retailer 1$15,490 SGD
Retailer 13$15,590 SGD
Retailer 12$15,918 SGD
Retailer 9$17,873 SGD
Retailer 3$19,058 SGD
With Clarity$21,730 SGD

29 data points across 16 retailers

16 retailers$12,123 SGD to $21,730 SGD

B+
Cheapest Retailer
-
$12,123 SGD
B+
Retailer 2
-
$12,725 SGD
$9,950 USD
View
B+
Retailer 3
-
$12,968 SGD
$10,140 USD
View
B+
Retailer 4
-
$13,060 SGD
$10,212 USD
View
B+
Retailer 5
-
$13,124 SGD
View
B+
Retailer 6
-
$13,159 SGD
$10,290 USD
View
B+
Retailer 7
-
$13,403 SGD
$10,480 USD
View
B+
Retailer 8
-
$13,416 SGD
$10,490 USD
View
B+
Retailer 9
-
$13,417 SGD
£8,260 GBP
View
B
Retailer 10
-
$15,441 SGD
$12,074 USD
View
B
Retailer 11
-
$15,490 SGD
€11,535 EUR
View
B
Retailer 12
-
$15,590 SGD
$12,190 USD
View
B
Retailer 13
-
$15,918 SGD
$12,447 USD
View
B
Retailer 14
-
$17,873 SGD
$13,975 USD
View
B
Retailer 15
-
$19,058 SGD
$14,902 USD
View
Most Expensive
B
With Clarity
2564368871 · Nov 1
$21,730 SGD
$16,991 USD
View
15 more retailers have this diamond
Prices start from $12,123 SGDSave up to $9,607 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+
1.50ct Marquise
$12,123 SGD