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Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2554551416

Certificate GIA 2554551416

Diamond specifications and retailer prices

From $12,104 SGD
$9,464 USD
As of November 2, 2026
Save $9,070 SGD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $21,173 SGD at MOH London · As of November 2, 2026
View at MOH London

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 2554551416. Listed at 15 retailers as of November 2, 2026, with prices from $12,104 to $21,173, a $9,070 spread on the same certified stone. MOH London lists it at $21,173. 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
OriginNatural
Grading LabGIA
CertificateGIA 2554551416
Dimensions11.26 × 5.93 × 3.75 mm
L/W Ratio1.90
Key to symbols
Feather, Crystal, Cloud, Needle, Natural
Top View
11.26 mm5.93 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2554551416
Side View
Table 59.0%CrownGirdle: STK-STKPavilionCulet: NoneDepth 63.2%

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 2
Current: $21,173 SGD|Low: $11,946 SGD|High: $21,428 SGD|Avg: $15,030 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 7$12,104 SGD
Retailer 4$12,696 SGD
Retailer 10$12,702 SGD
Retailer 9$13,089 SGD
Retailer 5$13,556 SGD
Retailer 2$14,797 SGD
Retailer 8$15,821 SGD
Retailer 6$15,986 SGD
Retailer 11$15,986 SGD
Retailer 3$16,523 SGD
MOH London$21,173 SGD

41 data points across 11 retailers

15 retailers$12,104 SGD to $21,173 SGD

B+
Cheapest Retailer
-
$12,104 SGD
$9,464 USD
B+
Retailer 2
-
$12,696 SGD
$9,927 USD
View
B+
Retailer 3
-
$12,702 SGD
$9,932 USD
View
B+
Retailer 4
-
$12,858 SGD
A$15,468 AUD
View
B+
Retailer 5
-
$13,089 SGD
CA$14,214 CAD
View
B
Retailer 6
-
$13,556 SGD
$10,600 USD
View
Final sale: no returns
Retailer 7
-
$14,687 SGD
$11,484 USD
View
Price last confirmed 44 days ago
B+
Retailer 8
-
$14,797 SGD
£9,110 GBP
View
B
Retailer 9
-
$15,821 SGD
$12,371 USD
View
B
Retailer 10
-
$15,986 SGD
$12,500 USD
View
B
Retailer 11
-
$15,986 SGD
$12,500 USD
View
B
Retailer 12
-
$16,523 SGD
$12,920 USD
View
Retailer 13
-
$16,947 SGD
$13,251 USD
View
Price last confirmed 44 days ago
Retailer 14
-
$16,947 SGD
$13,251 USD
View
Price last confirmed 49 days ago
Most Expensive
B
MOH London
C3DA0E18E · Nov 2
$21,173 SGD
£13,036 GBP
View
14 more retailers have this diamond
Prices start from $12,104 SGDSave up to $9,070 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
$12,104 SGD