Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 6375880480

Certificate GIA 6375880480

Diamond specifications and retailer prices

From $4,468 USD
As of November 6, 2026
Save $4,363 USD (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,831 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6375880480. Listed at 17 retailers as of November 5, 2026, with prices from $4,468 to $8,831, a $4,363 spread on the same certified stone. NZ Jewellers lists it at $8,831. 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

1.51
Carat
K
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6375880480
Dimensions8.88 × 6.63 × 4.05 mm
L/W Ratio1.34
Top View
8.88 mm6.63 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6375880480
Side View
Table 60.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 61.1%

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 6
Current: $4,999 USD|Low: $4,660 USD|High: $8,305 USD|Avg: $5,767 USD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$4,660 USD
Retailer 2$4,686 USD
Retailer 1$4,999 USD
Retailer 7$5,280 USD
Retailer 5$5,973 USD
Retailer 3$6,442 USD
Retailer 4$8,185 USD

40 data points across 7 retailers

17 retailers$4,468 USD to $8,831 USD

B+
Cheapest Retailer
-
$4,468 USD
B+
Retailer 2
-
$4,593 USD
View
B+
Retailer 3
-
$4,604 USD
View
Retailer 4
-
$4,660 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$4,686 USD
View
B
Retailer 6
-
$4,800 USD
View
B
Retailer 7
-
$4,955 USD
View
B
Retailer 8
-
$4,999 USD
View
Retailer 9
-
$5,280 USD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$5,280 USD
View
B
Retailer 11
-
$5,280 USD
View
B
Retailer 12
-
$5,432 USD
View
B
Retailer 13
-
$5,973 USD
View
B
Retailer 14
-
$6,092 USD
View
B
Retailer 15
-
$6,442 USD
View
C
Retailer 16
-
$8,185 USD
View
Most Expensive
C
NZ Jewellers
2ac61b3e-3814-4d03-9bf2-8ef5f5c05a53 · Nov 5
$8,831 USD
View
16 more retailers have this diamond
Prices start from $4,468 USDSave up to $4,363 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.

B+
1.51ct Oval
$4,468 USD