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1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6551624021

Certificate GIA 6551624021

Diamond specifications and retailer prices

From $7,843 USD
Save $8,910 USD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $16,753 USD at NZ Jewellers
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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551624021. Listed at 18 retailers, with prices from $7,843 to $16,753 at NZ Jewellers, a $8,910 spread on the same certified stone. 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6551624021
Dimensions7.35 × 7.30 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
7.35 mm7.30 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551624021
Side View
Table 55.0%Crown 33.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $16,753 USD|Low: $5,271 USD|High: $16,753 USD|Avg: $8,631 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
Retailer 23
October 1, 2026
Retailer 16$5,271 USD
Retailer 9$5,866 USD
Retailer 12$6,857 USD
Retailer 11$7,573 USD
Retailer 22$7,843 USD
Retailer 23$7,906 USD
Retailer 10$8,090 USD
Retailer 14$8,090 USD
Retailer 5$8,330 USD
Retailer 15$8,360 USD
Retailer 21$8,377 USD
Retailer 4$9,075 USD
Retailer 18$9,214 USD
Retailer 8$9,236 USD
Retailer 2$9,244 USD
Retailer 19$9,257 USD
Retailer 6$10,471 USD
Retailer 3$10,483 USD
Retailer 17$10,739 USD
Retailer 7$11,027 USD
Retailer 13$12,077 USD
Retailer 20$13,240 USD
NZ Jewellers$16,753 USD

20 data points across 23 retailers

18 retailers$7,843 USD to $16,753 USD

B+
Cheapest Retailer
-
$7,843 USD
B+
Retailer 2
-
$7,906 USD
View
B+
Retailer 3
-
$8,090 USD
View
Price last confirmed 14 days ago
B+
Retailer 4
-
$8,330 USD
View
B+
Retailer 5
-
$8,360 USD
View
Price last confirmed 14 days ago
B+
Retailer 6
-
$8,377 USD
View
B
Retailer 7
-
$9,075 USD
View
B
Retailer 8
-
$9,214 USD
View
B+
Retailer 9
-
$9,236 USD
View
Price last confirmed 16 days ago
B
Retailer 10
-
$9,244 USD
A$14,221 AUD
View
B
Retailer 11
-
$9,250 USD
£7,283 GBP
View
B
Retailer 12
-
$10,471 USD
View
B
Retailer 13
-
$10,483 USD
View
B
Retailer 14
-
$10,739 USD
€10,228 EUR
View
B
Retailer 15
-
$11,027 USD
View
B
Retailer 16
-
$12,077 USD
ZAR 195,108 ZAR
View
B
Retailer 17
-
$13,240 USD
£10,425 GBP
View
Most Expensive
B
NZ Jewellers
86ee1225-67cf-43fb-9fcb-fa7e1b94f335 · Sep 28
$16,753 USD
View
17 more retailers have this diamond
Prices start from $7,843 USDSave up to $8,910 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.

B+
1.51ct Round
$7,843 USD