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Marquise|Natural|GIA

1.51ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 1186263478

Certificate GIA 1186263478

Diamond specifications and retailer prices

From $11,071 SGD
$8,657 USD
As of November 1, 2026
Save $8,879 SGD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $19,951 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded G 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 1186263478. Listed at 14 retailers as of October 30, 2026, with prices from $11,071 to $19,951, a $8,879 spread on the same certified stone. NZ Jewellers lists it at $19,951. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1186263478
Dimensions10.65 × 6.09 × 3.81 mm
L/W Ratio1.75
Culet sizeSmall
Top View
10.65 mm6.09 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1186263478
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: SmallDepth 62.5%

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: $19,951 SGD|Low: $11,071 SGD|High: $19,951 SGD|Avg: $14,650 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$11,071 SGD
Retailer 8$11,971 SGD
Retailer 3$12,070 SGD
Retailer 9$12,968 SGD
Retailer 5$12,992 SGD
Retailer 7$13,168 SGD
Retailer 2$14,371 SGD
Retailer 10$14,963 SGD
Retailer 11$15,753 SGD
Retailer 12$17,194 SGD
Retailer 6$18,695 SGD
NZ Jewellers$19,951 SGD

41 data points across 12 retailers

14 retailers$11,071 SGD to $19,951 SGD

B+
Cheapest Retailer
-
$11,071 SGD
$8,657 USD
B+
Retailer 2
-
$11,207 SGD
$8,763 USD
View
B+
Retailer 3
-
$11,607 SGD
CA$12,606 CAD
View
B+
Retailer 4
-
$11,971 SGD
$9,360 USD
View
B+
Retailer 5
-
$12,070 SGD
$9,438 USD
View
B+
Retailer 6
-
$12,968 SGD
$10,140 USD
View
B+
Retailer 7
-
$12,992 SGD
£7,999 GBP
View
B+
Retailer 8
-
$13,168 SGD
$10,296 USD
View
B
Retailer 9
-
$13,799 SGD
$10,790 USD
View
B
Retailer 10
-
$14,371 SGD
€10,702 EUR
View
B
Retailer 11
-
$14,963 SGD
$11,700 USD
View
Retailer 12
-
$15,753 SGD
$12,318 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$18,695 SGD
£11,510 GBP
View
Most Expensive
B
NZ Jewellers
820b5d22-e9e2-4532-819b-2b1403d0e7c4 · Oct 30
$19,951 SGD
$15,600 USD
View
13 more retailers have this diamond
Prices start from $11,071 SGDSave up to $8,879 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+
1.51ct Marquise
$11,071 SGD