Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2564661078

Certificate GIA 2564661078

Diamond specifications and retailer prices

From $7,309 USD
HK$57,100 HKD
As of November 1, 2026
Save $9,057 USD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $16,366 USD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded I 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 2564661078. Listed at 11 retailers as of November 1, 2026, with prices from $7,309 to $16,366, a $9,057 spread on the same certified stone. NZ Jewellers lists it at $16,366. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564661078
Dimensions11.37 × 5.98 × 3.83 mm
L/W Ratio1.90
Girdle conditionThick to Very Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural
Top View
11.37 mm5.98 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564661078
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.0%

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: $16,366 USD|Low: $7,309 USD|High: $16,777 USD|Avg: $9,732 USD|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 11$7,309 USD
Retailer 2$7,495 USD
Retailer 9$7,721 USD
Retailer 3$7,929 USD
Retailer 10$8,674 USD
Retailer 6$9,285 USD
Retailer 8$9,785 USD
Retailer 4$9,802 USD
Retailer 5$9,936 USD
Retailer 7$13,637 USD
NZ Jewellers$16,366 USD

12 data points across 11 retailers

11 retailers$7,309 USD to $16,366 USD

B+
Cheapest Retailer
-
$7,309 USD
HK$57,100 HKD
B+
Retailer 2
-
$7,495 USD
₹713,823 INR
View
B+
Retailer 3
-
$7,721 USD
A$11,879 AUD
View
B+
Retailer 4
-
$7,929 USD
View
Final sale: no returns
B+
Retailer 5
-
$8,674 USD
View
B
Retailer 6
-
$9,285 USD
£7,311 GBP
View
B+
Retailer 7
-
$9,785 USD
View
B+
Retailer 8
-
$9,802 USD
£7,718 GBP
View
B
Retailer 9
-
$9,936 USD
View
B
Retailer 10
-
$13,637 USD
£10,738 GBP
View
Most Expensive
B
NZ Jewellers
7db7de9f-8eef-4587-93a5-3f82ce5dc6d7 · Nov 3
$16,366 USD
View
10 more retailers have this diamond
Prices start from $7,309 USDSave up to $9,057 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
$7,309 USD