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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6562622580

Certificate GIA 6562622580

Diamond specifications and retailer prices

From $6,136 USD
As of November 6, 2026
Save $7,505 USD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,641 USD at NZ Jewellers · As of November 7, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562622580. Listed at 22 retailers as of November 6, 2026, with prices from $6,136 to $13,641, a $7,505 spread on the same certified stone. NZ Jewellers lists it at $13,641. 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6562622580
Dimensions7.29 × 7.35 × 4.58 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
7.29 mm7.35 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562622580
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 41°Culet: NoneDepth 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 6
Current: $13,641 USD|Low: $6,136 USD|High: $13,641 USD|Avg: $8,146 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
Retailer 20
Retailer 21
November 7, 2026
Retailer 12$6,136 USD
Retailer 10$6,506 USD
Retailer 9$6,820 USD
Retailer 6$6,849 USD
Retailer 15$7,043 USD
Retailer 13$7,104 USD
Retailer 14$7,389 USD
Retailer 7$7,503 USD
Retailer 21$7,620 USD
Retailer 18$7,712 USD
Retailer 20$7,840 USD
Retailer 11$7,882 USD
Retailer 3$8,240 USD
Retailer 19$8,240 USD
Retailer 4$8,510 USD
Retailer 8$8,526 USD
Retailer 2$8,765 USD
Retailer 17$9,047 USD
Retailer 16$10,321 USD
Retailer 5$11,336 USD
NZ Jewellers$13,641 USD

8 data points across 21 retailers

22 retailers$6,136 USD to $13,641 USD

B+
Cheapest Retailer
-
$6,136 USD
B+
Retailer 2
-
$6,405 USD
View
B+
Retailer 3
-
$6,506 USD
View
B+
Retailer 4
-
$6,820 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,849 USD
View
B+
Retailer 6
-
$7,043 USD
View
B+
Retailer 7
-
$7,104 USD
View
B
Retailer 8
-
$7,389 USD
View
B
Retailer 9
-
$7,503 USD
View
B+
Retailer 10
-
$7,620 USD
View
B+
Retailer 11
-
$7,712 USD
View
B+
Retailer 12
-
$7,840 USD
View
B+
Retailer 13
-
$7,882 USD
View
B
Retailer 14
-
$8,240 USD
View
B
Retailer 15
-
$8,240 USD
View
B
Retailer 16
-
$8,510 USD
View
B
Retailer 17
-
$8,526 USD
View
B
Retailer 18
-
$8,765 USD
View
B
Retailer 19
-
$9,047 USD
View
B
Retailer 20
-
$10,321 USD
View
B
Retailer 21
-
$11,336 USD
View
Most Expensive
B
NZ Jewellers
d2df7cba-f5a1-4701-8622-d541ad656b00 · Nov 7
$13,641 USD
View
21 more retailers have this diamond
Prices start from $6,136 USDSave up to $7,505 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+
1.51ct Round
$6,136 USD