Round|Natural|GIA

2.51ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 5553012760

Certificate GIA 5553012760

Diamond specifications and retailer prices

From $16,579 AUD
As of November 5, 2026
Save $2,390 AUD (13%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $23,270 AUD at NZ Jewellers · As of September 27, 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 5553012760. Listed at 23 retailers as of November 5, 2026, with a relatively tight 14% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5553012760
Dimensions8.58 × 8.63 × 5.38 mm
L/W Ratio1.01
Top View
8.58 mm8.63 mm2.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553012760
Side View
Table 59.0%Crown 36°GirdlePavilion 41°CuletDepth 62.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $23,155 AUD|Low: $14,371 AUD|High: $28,270 AUD|Avg: $18,948 AUD|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$14,371 AUD
Retailer 8$15,142 AUD
Retailer 4$16,076 AUD
Retailer 7$16,579 AUD
Retailer 6$16,612 AUD
Retailer 5$16,868 AUD
Retailer 10$17,861 AUD
Retailer 2$18,969 AUD
Retailer 3$21,545 AUD
NZ Jewellers$23,155 AUD
Retailer 11$28,270 AUD

35 data points across 11 retailers

23 retailers$16,579 AUD to $18,969 AUD

Retailer 1
-
$14,371 AUD
Price last confirmed 8 days ago
Retailer 2
-
$15,142 AUD
View
Price last confirmed 8 days ago
Retailer 3
-
$16,076 AUD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$16,579 AUD
View
Retailer 5
-
$16,612 AUD
View
Price last confirmed 27 days ago
Retailer 6
-
$16,612 AUD
View
Price last confirmed 36 days ago
Retailer 7
-
$16,612 AUD
View
Price last confirmed 30 days ago
Retailer 8
-
$16,612 AUD
View
Price last confirmed 33 days ago
Retailer 9
-
$16,612 AUD
View
Price last confirmed 19 days ago
Retailer 10
-
$16,612 AUD
View
Price last confirmed 8 days ago
Retailer 11
-
$16,695 AUD
View
Price last confirmed 42 days ago
Retailer 12
-
$16,868 AUD
View
Price last confirmed 22 days ago
Retailer 13
-
$16,868 AUD
View
Price last confirmed 8 days ago
Retailer 14
-
$16,909 AUD
View
Price last confirmed 53 days ago
Retailer 15
-
$16,909 AUD
View
Price last confirmed 54 days ago
Retailer 16
-
$16,952 AUD
View
Price last confirmed 38 days ago
Retailer 17
-
$16,995 AUD
View
Price last confirmed 60 days ago
B
Retailer 18
-
$18,969 AUD
View
Retailer 19
-
$23,155 AUD
View
Price last confirmed 10 days ago
Retailer 20
-
$23,155 AUD
View
Price last confirmed 31 days ago
Retailer 21
-
$23,155 AUD
View
Price last confirmed 34 days ago
Retailer 22
-
$23,155 AUD
View
Price last confirmed 26 days ago
Most Expensive
NZ Jewellers
86750623-f616-4c10-ba81-b2583f017fd9 · Sep 27
$23,270 AUD
$16,290 USD
View
Price last confirmed 40 days ago
22 more retailers have this diamond
Prices start from $16,579 AUDSave up to $2,390 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
$16,579 AUD