CaratHunter
Plans
Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 1545370424

Certificate GIA 1545370424

Diamond specifications and retailer prices

From $8,680 USD
As of November 5, 2026
Save $2,696 USD (24%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $14,068 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545370424. Listed at 8 retailers as of November 5, 2026, with a 31% 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
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.92°
OriginNatural
Grading LabGIA
CertificateGIA 1545370424
Dimensions11.10 × 7.13 × 4.68 mm
L/W Ratio1.56
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Feather, Needle, Indented Natural
Top View
11.10 mm7.13 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545370424
Side View
Table 61.0%Crown 38.92°GirdlePavilionCuletDepth 65.7%

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 5
Current: $14,068 USD|Low: $8,680 USD|High: $14,541 USD|Avg: $10,993 USD|-3.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2$8,680 USD
Retailer 5$8,774 USD
Retailer 6$10,034 USD
Retailer 8$10,194 USD
Retailer 7$10,351 USD
Retailer 3$11,376 USD
Retailer 4$13,252 USD
NZ Jewellers$14,068 USD

41 data points across 8 retailers

8 retailers$8,680 USD to $11,376 USD

A
Cheapest Retailer
-
$8,680 USD
Retailer 2
-
$8,774 USD
View
Price last confirmed 8 days ago
Retailer 3
-
$10,034 USD
View
Price last confirmed 9 days ago
Retailer 4
-
$10,194 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$10,351 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$11,376 USD
View
Retailer 7
-
$13,252 USD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
0562b1d5-55da-4933-927f-2fa430b289dc · Oct 27
$14,068 USD
View
Price last confirmed 10 days ago
7 more retailers have this diamond
Prices start from $8,680 USDSave up to $2,696 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
2.51ct Oval
$8,680 USD