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Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 6233776185

Certificate GIA 6233776185

Diamond specifications and retailer prices

From $18,117 NZD
As of November 6, 2026
Save $5,657 NZD (24%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $34,249 NZD at NZ Jewellers · As of October 17, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6233776185. Listed at 16 retailers as of November 6, 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. 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 (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.47°
OriginNatural
Grading LabGIA
CertificateGIA 6233776185
Dimensions11.32 × 7.40 × 4.47 mm
L/W Ratio1.53
Top View
11.32 mm7.40 mm2.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6233776185
Side View
Table 65.0%Crown 34.47°Girdle: THK-VTKPavilionCulet: NoneDepth 60.4%

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 6
Current: $34,249 NZD|Low: $15,187 NZD|High: $34,249 NZD|Avg: $22,358 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 10$16,686 NZD
Retailer 6$18,117 NZD
Retailer 12$18,400 NZD
Retailer 2$18,818 NZD
Retailer 8$19,064 NZD
Retailer 5$19,065 NZD
Retailer 18$19,625 NZD
Retailer 17$20,548 NZD
Retailer 7$20,909 NZD
Retailer 4$22,262 NZD
Retailer 15$22,605 NZD
Retailer 3$22,736 NZD
Retailer 11$22,736 NZD
Retailer 16$23,774 NZD
Retailer 9$25,686 NZD
Retailer 13$25,698 NZD
Retailer 14$32,263 NZD
NZ Jewellers$34,249 NZD

30 data points across 18 retailers

16 retailers$18,117 NZD to $23,774 NZD

B+
Cheapest Retailer
-
$18,117 NZD
Retailer 2
-
$18,400 NZD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$18,818 NZD
View
B+
Retailer 4
-
$19,064 NZD
View
Retailer 5
-
$19,065 NZD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$19,625 NZD
View
Retailer 7
-
$20,548 NZD
View
Price last confirmed 21 days ago
Retailer 8
-
$20,909 NZD
View
Price last confirmed 19 days ago
Retailer 9
-
$22,262 NZD
View
Price last confirmed 17 days ago
Retailer 10
-
$22,605 NZD
View
Price last confirmed 21 days ago
Retailer 11
-
$22,736 NZD
View
Price last confirmed 17 days ago
Retailer 12
-
$22,736 NZD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$23,774 NZD
View
Retailer 14
-
$25,686 NZD
View
Price last confirmed 19 days ago
Retailer 15
-
$32,263 NZD
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
1e1aa86d-2b55-4780-943c-5d9c0077cdc7 · Oct 17
$34,249 NZD
$18,986 USD
View
Price last confirmed 20 days ago
15 more retailers have this diamond
Prices start from $18,117 NZDSave up to $5,657 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 Oval
$18,117 NZD