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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 6561676300

Certificate GIA 6561676300

Diamond specifications and retailer prices

From $2,240 USD
As of November 6, 2026
Save $4,047 USD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,287 USD at NZ Jewellers · As of November 5, 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 M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6561676300. Listed at 13 retailers as of November 5, 2026, with prices from $2,240 to $6,287, a $4,047 spread on the same certified stone. NZ Jewellers lists it at $6,287. 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
M
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6561676300
Dimensions7.24 × 7.30 × 4.62 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather, Needle, Natural
Top View
7.24 mm7.30 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561676300
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.5%

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: Nov 6
Current: $6,287 USD|Low: $2,240 USD|High: $6,287 USD|Avg: $3,362 USD|+15.0%
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
November 6, 2026
Retailer 11$2,240 USD
Retailer 9$2,693 USD
Retailer 4$2,705 USD
Retailer 5$2,888 USD
Retailer 8$3,007 USD
Retailer 10$3,123 USD
Retailer 3$3,139 USD
Retailer 6$3,149 USD
Retailer 13$3,368 USD
Retailer 12$3,470 USD
Retailer 7$3,492 USD
Retailer 2$3,969 USD
NZ Jewellers$6,287 USD

12 data points across 13 retailers

13 retailers$2,240 USD to $6,287 USD

A
Cheapest Retailer
-
$2,240 USD
B+
Retailer 2
-
$2,693 USD
View
B+
Retailer 3
-
$2,705 USD
View
B+
Retailer 4
-
$2,888 USD
View
B+
Retailer 5
-
$3,007 USD
View
B+
Retailer 6
-
$3,123 USD
View
Retailer 7
-
$3,139 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,149 USD
View
B+
Retailer 9
-
$3,368 USD
View
B+
Retailer 10
-
$3,470 USD
View
B+
Retailer 11
-
$3,492 USD
View
B
Retailer 12
-
$3,969 USD
View
Most Expensive
C
NZ Jewellers
16af0689-024b-484a-978b-e88b7ce78d30 · Nov 5
$6,287 USD
View
12 more retailers have this diamond
Prices start from $2,240 USDSave up to $4,047 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
$2,240 USD