CaratHunter
Plans
Round|Natural|GIA

2.51ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6555007631

Certificate GIA 6555007631

Diamond specifications and retailer prices

From $8,425 NZD
As of November 4, 2026
Save $10,764 NZD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $20,900 NZD 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 6555007631. Listed at 15 retailers as of November 4, 2026, with a 128% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555007631
Dimensions8.56 × 8.63 × 5.40 mm
L/W Ratio1.01
Top View
8.56 mm8.63 mm2.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555007631
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.8%

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 4
Current: $19,189 NZD|Low: $8,425 NZD|High: $20,900 NZD|Avg: $12,977 NZD|-8.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4$8,425 NZD
Retailer 2$10,970 NZD
Retailer 3$11,474 NZD
Retailer 7$11,474 NZD
Retailer 6$12,027 NZD
Retailer 5$12,668 NZD
NZ Jewellers$19,189 NZD

38 data points across 7 retailers

15 retailers$8,425 NZD to $19,189 NZD

A
Cheapest Retailer
-
$8,425 NZD
A
Retailer 2
-
$10,970 NZD
View
A
Retailer 3
-
$11,474 NZD
View
A
Retailer 4
-
$11,474 NZD
View
Retailer 5
-
$11,643 NZD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$12,027 NZD
View
A
Retailer 7
-
$12,150 NZD
View
Retailer 8
-
$12,155 NZD
View
Price last confirmed 30 days ago
Retailer 9
-
$12,326 NZD
View
Price last confirmed 38 days ago
Retailer 10
-
$12,515 NZD
View
Price last confirmed 38 days ago
A
Retailer 11
-
$12,668 NZD
View
B
Retailer 12
-
$19,189 NZD
View
Retailer 13
-
$19,474 NZD
View
Price last confirmed 10 days ago
Retailer 14
-
$20,329 NZD
View
Price last confirmed 26 days ago
Most Expensive
NZ Jewellers
644459cf-54cd-4e96-a75e-ebeba0d45fb3 · Sep 27
$20,900 NZD
$11,749 USD
View
Price last confirmed 40 days ago
14 more retailers have this diamond
Prices start from $8,425 NZDSave up to $10,764 NZD

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
$8,425 NZD