Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2566506606

Certificate GIA 2566506606

Diamond specifications and retailer prices

From $9,105 USD
SGD 12,304 SGD
As of November 2, 2026
Save $7,215 USD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $16,320 USD 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 H 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 2566506606. Listed at 14 retailers as of November 1, 2026, with prices from $9,105 to $16,320, a $7,215 spread on the same certified stone. With Clarity lists it at $16,320. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.79°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566506606
Dimensions11.36 × 5.97 × 3.79 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.36 mm5.97 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566506606
Side View
Table 57.0%Crown 36.79°Girdle: MED-THKPavilion 40.2°Culet: NDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $11,634 USD|Low: $9,105 USD|High: $16,320 USD|Avg: $11,382 USD|+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
With Clarity
November 2, 2026
Retailer 2$9,105 USD
Retailer 12$9,558 USD
Retailer 8$9,765 USD
Retailer 3$9,807 USD
Retailer 4$9,883 USD
Retailer 11$10,066 USD
Retailer 6$10,079 USD
Retailer 5$11,615 USD
Retailer 1$11,634 USD
Retailer 10$11,727 USD
Retailer 9$11,945 USD
Retailer 7$13,423 USD
Retailer 13$14,311 USD
With Clarity$16,320 USD

23 data points across 14 retailers

14 retailers$9,105 USD to $16,320 USD

B+
Cheapest Retailer
-
$9,105 USD
SGD 12,304 SGD
B+
Retailer 2
-
$9,558 USD
View
B+
Retailer 3
-
$9,765 USD
View
B+
Retailer 4
-
$9,807 USD
View
B+
Retailer 5
-
$9,883 USD
View
Retailer 6
-
$10,066 USD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$10,079 USD
£7,936 GBP
View
B
Retailer 8
-
$11,615 USD
View
B
Retailer 9
-
$11,634 USD
€11,080 EUR
View
B
Retailer 10
-
$11,727 USD
View
Retailer 11
-
$11,945 USD
View
Price last confirmed 11 days ago
B
Retailer 12
-
$13,423 USD
View
B
Retailer 13
-
$14,311 USD
View
Most Expensive
B
With Clarity
2566506606 · Nov 1
$16,320 USD
View
13 more retailers have this diamond
Prices start from $9,105 USDSave up to $7,215 USD

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
$9,105 USD