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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 1246106136

Certificate GIA 1246106136

Diamond specifications and retailer prices

From $13,091 AUD
As of November 5, 2026
10 retailers carry this diamond
Most expensive: $17,728 AUD at Diamonds Direct · As of October 28, 2026
View at Diamonds Direct

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1246106136. Listed at 10 retailers as of November 5, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceStrong
Crown angle38.5°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1246106136
Dimensions8.44 × 8.39 × 5.46 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.44 mm8.39 mm2.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1246106136
Side View
Table 56.0%Crown 38.5°Girdle: STK-THKPavilion 40.2°Culet: NDepth 64.8%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $17,728 AUD|Low: $12,025 AUD|High: $17,728 AUD|Avg: $14,710 AUD
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$12,025 AUD
Retailer 2$13,091 AUD
Retailer 4$13,234 AUD
Retailer 7$13,251 AUD
Retailer 11$13,295 AUD
Retailer 10$13,769 AUD
Retailer 5$15,362 AUD
Retailer 3$15,388 AUD
Retailer 8$15,538 AUD
Retailer 9$15,981 AUD
Diamonds Direct$17,728 AUD

7 data points across 11 retailers

10 retailers

Retailer 1
-
$12,025 AUD
Price last confirmed 9 days ago
B+
Retailer 2
-
$13,091 AUD
View
Retailer 3
-
$13,234 AUD
View
Price last confirmed 9 days ago
Retailer 4
-
$13,251 AUD
View
Price last confirmed 9 days ago
Retailer 5
-
$13,295 AUD
View
Price last confirmed 10 days ago
Retailer 6
-
$13,769 AUD
View
Price last confirmed 10 days ago
Retailer 7
-
$15,362 AUD
View
Price last confirmed 9 days ago
Retailer 8
-
$15,538 AUD
View
Price last confirmed 10 days ago
Retailer 9
-
$15,981 AUD
View
Price last confirmed 11 days ago
Most Expensive
Diamonds Direct
1147873 · Oct 28
$17,728 AUD
$12,410 USD
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from $13,091 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.

B+
2.51ct Round
$13,091 AUD