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Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1567270754

Certificate GIA 1567270754

Diamond specifications and retailer prices

From $8,044 SGD
$6,292 USD
As of November 2, 2026
Save $2,719 SGD (25%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,294 SGD at NZ Jewellers · As of October 11, 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 I 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 1567270754. Listed at 14 retailers as of November 2, 2026, with a 34% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1567270754
Dimensions11.45 × 6.01 × 3.57 mm
L/W Ratio1.91
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
11.45 mm6.01 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1567270754
Side View
Table 58.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $18,294 SGD|Low: $7,443 SGD|High: $18,294 SGD|Avg: $11,108 SGD|+6.7%
NZ Jewellers
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
November 2, 2026
Retailer 8$8,044 SGD
Retailer 9$8,151 SGD
Retailer 10$8,666 SGD
Retailer 6$8,747 SGD
Retailer 5$9,256 SGD
Retailer 4$9,454 SGD
Retailer 14$10,097 SGD
Retailer 7$10,413 SGD
Retailer 2$10,763 SGD
Retailer 11$10,805 SGD
Retailer 3$10,938 SGD
Retailer 12$11,902 SGD
Retailer 13$12,620 SGD
Retailer 15$15,427 SGD
NZ Jewellers$18,294 SGD

41 data points across 15 retailers

14 retailers$8,044 SGD to $10,763 SGD

A
Cheapest Retailer
-
$8,044 SGD
$6,292 USD
A
Retailer 2
-
$8,151 SGD
$6,376 USD
View
A
Retailer 3
-
$8,178 SGD
A$9,842 AUD
View
A
Retailer 4
-
$8,666 SGD
$6,779 USD
View
Retailer 5
-
$9,256 SGD
$7,240 USD
View
Price last confirmed 20 days ago
Retailer 6
-
$9,454 SGD
$7,395 USD
View
Price last confirmed 21 days ago
Retailer 7
-
$10,097 SGD
$7,898 USD
View
Price last confirmed 21 days ago
Retailer 8
-
$10,413 SGD
$8,145 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
$10,763 SGD
£6,629 GBP
View
Retailer 10
-
$10,805 SGD
£6,655 GBP
View
Price last confirmed 20 days ago
Retailer 11
-
$10,938 SGD
$8,556 USD
View
Price last confirmed 23 days ago
Retailer 12
-
$12,620 SGD
$9,872 USD
View
Price last confirmed 21 days ago
Retailer 13
-
$15,427 SGD
£9,502 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
d63f619d-cfbf-47ba-ad25-460cd66cf1bb · Oct 11
$18,294 SGD
$14,310 USD
View
Price last confirmed 21 days ago
13 more retailers have this diamond
Prices start from $8,044 SGDSave up to $2,719 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.

A
1.51ct Marquise
$8,044 SGD