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Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2231826354

Certificate GIA 2231826354

Diamond specifications and retailer prices

From $8,811 USD
As of November 1, 2026
Save $7,335 USD (45%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $16,146 USD at NZ Jewellers · As of November 2, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231826354. Listed at 22 retailers as of November 1, 2026, with prices from $8,811 to $16,146, a $7,335 spread on the same certified stone. NZ Jewellers lists it at $16,146. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2231826354
Dimensions7.27 × 7.32 × 4.58 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.27 mm7.32 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231826354
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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: $16,146 USD|Low: $8,811 USD|High: $16,146 USD|Avg: $11,046 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
Retailer 22
November 3, 2026
Retailer 9$8,811 USD
Retailer 12$8,988 USD
Retailer 11$9,225 USD
Retailer 22$9,248 USD
Retailer 5$9,590 USD
Retailer 7$9,686 USD
Retailer 4$10,332 USD
Retailer 13$10,532 USD
Retailer 18$10,656 USD
Retailer 3$10,779 USD
Retailer 6$10,780 USD
Retailer 17$10,790 USD
Retailer 19$11,146 USD
Retailer 8$11,370 USD
Retailer 10$11,370 USD
Retailer 14$11,750 USD
Retailer 2$11,784 USD
Retailer 16$11,993 USD
Retailer 15$12,369 USD
Retailer 21$14,232 USD
Retailer 20$15,130 USD
NZ Jewellers$16,146 USD

7 data points across 22 retailers

22 retailers$8,811 USD to $16,146 USD

B+
Cheapest Retailer
-
$8,811 USD
B+
Retailer 2
-
$8,988 USD
View
B+
Retailer 3
-
$9,080 USD
A$13,970 AUD
View
B+
Retailer 4
-
$9,225 USD
View
B+
Retailer 5
-
$9,248 USD
View
B+
Retailer 6
-
$9,590 USD
View
B+
Retailer 7
-
$9,686 USD
View
Final sale: no returns
B+
Retailer 8
-
$9,702 USD
View
B+
Retailer 9
-
$10,332 USD
View
B+
Retailer 10
-
$10,532 USD
£8,293 GBP
View
B
Retailer 11
-
$10,656 USD
View
B+
Retailer 12
-
$10,779 USD
View
B+
Retailer 13
-
$10,790 USD
View
B+
Retailer 14
-
$11,146 USD
£8,776 GBP
View
B+
Retailer 15
-
$11,370 USD
View
B+
Retailer 16
-
$11,370 USD
View
B+
Retailer 17
-
$11,750 USD
View
B+
Retailer 18
-
$11,784 USD
View
B+
Retailer 19
-
$11,993 USD
€11,422 EUR
View
B
Retailer 20
-
$14,232 USD
ZAR 229,920 ZAR
View
B
Retailer 21
-
$15,130 USD
£11,913 GBP
View
Most Expensive
B
NZ Jewellers
7f99f642-1df0-480d-bbcf-61c86faa58f3 · Nov 2
$16,146 USD
View
21 more retailers have this diamond
Prices start from $8,811 USDSave up to $7,335 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
$8,811 USD