Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2564234109

Certificate GIA 2564234109

Diamond specifications and retailer prices

From $9,638 USD
HK$75,300 HKD
As of October 30, 2026
Save $8,683 USD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $18,321 USD 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564234109. Listed at 10 retailers as of October 30, 2026, with prices from $9,638 to $18,321, a $8,683 spread on the same certified stone. NZ Jewellers lists it at $18,321. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Pavilion angle41.04°
OriginNatural
Grading LabGIA
CertificateGIA 2564234109
Dimensions12.15 × 5.72 × 3.73 mm
L/W Ratio2.12
Key to symbols
Twinning Wisp, Crystal, Feather, Natural
Top View
12.15 mm5.72 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2564234109
Side View
Table 55.0%CrownGirdle: THK-VTKPavilion 41.04°Culet: NoneDepth 65.3%

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: Oct 30
Current: $18,321 USD|Low: $9,638 USD|High: $18,488 USD|Avg: $13,371 USD|-0.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$9,638 USD
Retailer 3$10,648 USD
Retailer 4$12,336 USD
Retailer 8$13,060 USD
Retailer 9$13,265 USD
Retailer 10$13,644 USD
Retailer 7$13,738 USD
Retailer 2$16,695 USD
Retailer 6$17,417 USD
NZ Jewellers$18,321 USD

10 data points across 10 retailers

10 retailers$9,638 USD to $18,321 USD

A
Cheapest Retailer
-
$9,638 USD
HK$75,300 HKD
B+
Retailer 2
-
$10,648 USD
€10,141 EUR
View
B+
Retailer 3
-
$12,336 USD
£9,713 GBP
View
B
Retailer 4
-
$13,060 USD
View
B
Retailer 5
-
$13,265 USD
View
B
Retailer 6
-
$13,644 USD
View
B+
Retailer 7
-
$13,738 USD
€13,084 EUR
View
B
Retailer 8
-
$16,695 USD
View
B
Retailer 9
-
$17,417 USD
£13,714 GBP
View
Most Expensive
B
NZ Jewellers
221050fd-396e-4ec7-8e7b-c1425e163983 · Oct 30
$18,321 USD
View
9 more retailers have this diamond
Prices start from $9,638 USDSave up to $8,683 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.

A
1.51ct Marquise
$9,638 USD