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Round|Natural|GIA

2.51ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6521477112

Certificate GIA 6521477112

Diamond specifications and retailer prices

From $11,752 AUD
As of November 5, 2026
Save $10,351 AUD (47%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $22,103 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521477112. Listed at 16 retailers as of November 5, 2026, with prices from $11,752 to $22,103, a $10,351 spread on the same certified stone. NZ Jewellers lists it at $22,103. 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

2.51
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521477112
Dimensions8.76 × 8.70 × 5.29 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.76 mm8.70 mm2.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521477112
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $15,175 AUD|Low: $11,752 AUD|High: $18,336 AUD|Avg: $15,006 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$11,752 AUD
Retailer 6$13,581 AUD
Retailer 2$14,268 AUD
Retailer 1$15,175 AUD
Retailer 5$16,653 AUD
Retailer 3$18,209 AUD

29 data points across 6 retailers

16 retailers$11,752 AUD to $22,103 AUD

A
Cheapest Retailer
-
$11,752 AUD
A
Retailer 2
-
$11,977 AUD
View
B+
Retailer 3
-
$13,581 AUD
View
Retailer 4
-
$13,831 AUD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$14,268 AUD
View
B+
Retailer 6
-
$14,471 AUD
View
Retailer 7
-
$14,638 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$15,175 AUD
View
B
Retailer 9
-
$15,858 AUD
View
B
Retailer 10
-
$16,102 AUD
View
B
Retailer 11
-
$16,228 AUD
View
B
Retailer 12
-
$16,232 AUD
View
B
Retailer 13
-
$16,653 AUD
View
B
Retailer 14
-
$18,209 AUD
View
B
Retailer 15
-
$18,298 AUD
View
Most Expensive
B
NZ Jewellers
97f1f53f-56be-4e96-815e-c755986a0b38 · Nov 5
$22,103 AUD
$15,473 USD
View
15 more retailers have this diamond
Prices start from $11,752 AUDSave up to $10,351 AUD

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
2.51ct Round
$11,752 AUD