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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 $16,820 NZD
$9,464 USD
As of November 2, 2026
Save $12,604 NZD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $29,424 NZD 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 $16,820 to $29,424, a $12,604 spread on the same certified stone. MOH London lists it at $29,424. 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: $29,424 NZD|Low: $16,602 NZD|High: $29,779 NZD|Avg: $20,891 NZD|-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 2, 2026
Retailer 7$16,820 NZD
Retailer 4$17,643 NZD
Retailer 10$17,652 NZD
Retailer 9$18,189 NZD
Retailer 5$18,839 NZD
Retailer 2$20,393 NZD
Retailer 8$21,987 NZD
Retailer 6$22,216 NZD
Retailer 11$22,216 NZD
Retailer 3$22,963 NZD
MOH London$29,424 NZD

40 data points across 11 retailers

15 retailers$16,820 NZD to $29,424 NZD

B+
Cheapest Retailer
-
$16,820 NZD
$9,464 USD
B+
Retailer 2
-
$17,643 NZD
$9,927 USD
View
B+
Retailer 3
-
$17,652 NZD
$9,932 USD
View
B+
Retailer 4
-
$17,870 NZD
A$15,468 AUD
View
B+
Retailer 5
-
$18,189 NZD
CA$14,214 CAD
View
B
Retailer 6
-
$18,839 NZD
$10,600 USD
View
Final sale: no returns
B+
Retailer 7
-
$20,393 NZD
£9,035 GBP
View
Retailer 8
-
$20,411 NZD
$11,484 USD
View
Price last confirmed 43 days ago
B
Retailer 9
-
$21,987 NZD
$12,371 USD
View
B
Retailer 10
-
$22,216 NZD
$12,500 USD
View
B
Retailer 11
-
$22,216 NZD
$12,500 USD
View
B
Retailer 12
-
$22,963 NZD
$12,920 USD
View
Retailer 13
-
$23,551 NZD
$13,251 USD
View
Price last confirmed 44 days ago
Retailer 14
-
$23,551 NZD
$13,251 USD
View
Price last confirmed 48 days ago
Most Expensive
B
MOH London
C3DA0E18E · Nov 2
$29,424 NZD
£13,036 GBP
View
14 more retailers have this diamond
Prices start from $16,820 NZDSave up to $12,604 NZD

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
$16,820 NZD