Oval|Natural|GIA

1.40ct K SI1 Oval Natural Diamond

ID • K/SI1 • GIA 6237918691

Certificate GIA 6237918691

Diamond specifications and retailer prices

From $2,878 USD
As of November 4, 2026
Save $2,053 USD (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,182 USD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.4ct natural oval diamond

This 1.4ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6237918691. Listed at 12 retailers as of November 4, 2026, with a 71% 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

1.40
Carat
K
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6237918691
Dimensions5.86 × 9.50 × 3.73 mm
L/W Ratio1.62
Top View
5.86 mm9.50 mm1.40 ctK / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6237918691
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,130 USD|Low: $2,878 USD|High: $5,005 USD|Avg: $3,494 USD|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3$2,878 USD
Retailer 7$2,957 USD
Retailer 4$2,960 USD
Retailer 1$3,130 USD
Retailer 5$3,447 USD
Retailer 6$3,634 USD
Retailer 2$4,931 USD

40 data points across 7 retailers

12 retailers$2,878 USD to $4,931 USD

A
Cheapest Retailer
-
$2,878 USD
Retailer 2
-
$2,957 USD
View
Price last confirmed 29 days ago
Retailer 3
-
$2,957 USD
View
Price last confirmed 29 days ago
Retailer 4
-
$2,957 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$2,960 USD
View
Retailer 6
-
$3,071 USD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$3,130 USD
View
Retailer 8
-
$3,412 USD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$3,447 USD
View
B
Retailer 10
-
$3,634 USD
View
B
Retailer 11
-
$4,931 USD
View
Most Expensive
NZ Jewellers
ab1446d7-8a71-4d6a-9e2f-43d654f7ab9b · Sep 29
$6,182 USD
View
Price last confirmed 38 days ago
11 more retailers have this diamond
Prices start from $2,878 USDSave up to $2,053 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
1.40ct Oval
$2,878 USD