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1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6512752915

Certificate GIA 6512752915

Diamond specifications and retailer prices

From $6,682 USD
HK$52,200 HKD
As of October 29, 2026
Save $8,343 USD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,025 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 6512752915. Listed at 19 retailers as of October 28, 2026, with prices from $6,682 to $15,025, a $8,343 spread on the same certified stone. NZ Jewellers lists it at $15,025. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6512752915
Dimensions7.41 × 7.36 × 4.47 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.41 mm7.36 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512752915
Side View
Table 59.0%Crown 34°Girdle: ThickPavilion 40.6°Culet: NoneDepth 60.5%

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 29
Current: $15,025 USD|Low: $6,682 USD|High: $15,025 USD|Avg: $8,647 USD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 10$6,682 USD
Retailer 7$6,705 USD
Retailer 11$7,034 USD
Retailer 4$7,495 USD
Retailer 6$7,512 USD
Retailer 15$7,513 USD
Retailer 14$8,004 USD
Retailer 5$8,139 USD
Retailer 19$8,264 USD
Retailer 12$8,269 USD
Retailer 16$8,519 USD
Retailer 9$8,967 USD
Retailer 3$9,391 USD
Retailer 8$9,540 USD
Retailer 13$9,764 USD
Retailer 17$9,892 USD
Retailer 18$10,841 USD
Retailer 2$12,587 USD
NZ Jewellers$15,025 USD

40 data points across 19 retailers

19 retailers$6,682 USD to $15,025 USD

A
Cheapest Retailer
-
$6,682 USD
HK$52,200 HKD
A
Retailer 2
-
$6,705 USD
View
A
Retailer 3
-
$7,034 USD
View
A
Retailer 4
-
$7,495 USD
View
A
Retailer 5
-
$7,512 USD
View
Final sale: no returns
A
Retailer 6
-
$7,513 USD
View
A
Retailer 7
-
$8,004 USD
View
B+
Retailer 8
-
$8,139 USD
View
B+
Retailer 9
-
$8,264 USD
View
A
Retailer 10
-
$8,269 USD
£6,511 GBP
View
B+
Retailer 11
-
$8,519 USD
A$13,107 AUD
View
B+
Retailer 12
-
$8,967 USD
View
B+
Retailer 13
-
$9,391 USD
View
B+
Retailer 14
-
$9,540 USD
View
B+
Retailer 15
-
$9,764 USD
€9,299 EUR
View
B+
Retailer 16
-
$9,892 USD
View
B+
Retailer 17
-
$10,841 USD
ZAR 175,142 ZAR
View
B
Retailer 18
-
$12,587 USD
£9,911 GBP
View
Most Expensive
B
NZ Jewellers
6ce93c74-746a-4bb5-80ce-0577f7010937 · Oct 27
$15,025 USD
View
18 more retailers have this diamond
Prices start from $6,682 USDSave up to $8,343 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 Round
$6,682 USD