Round|Natural|GIA

1.40ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6541638434

Certificate GIA 6541638434

Diamond specifications and retailer prices

From $3,210 USD
As of November 5, 2026
Save $2,357 USD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,816 USD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.4ct natural round diamond

This 1.4ct natural round 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 and certified by GIA 6541638434. Listed at 11 retailers as of November 4, 2026, with a 73% 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6541638434
Dimensions7.14 × 7.09 × 4.43 mm
L/W Ratio1.01
Star length50%
Top View
7.14 mm7.09 mm1.40 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541638434
Side View
Table 58.0%Crown 36°GirdlePavilion 40.6°Culet: NoneDepth 62.2%

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 5
Current: $3,412 USD|Low: $3,210 USD|High: $5,996 USD|Avg: $4,051 USD|-5.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$3,210 USD
Retailer 1$3,412 USD
Retailer 2$3,877 USD
Retailer 3$3,886 USD
Retailer 4$4,074 USD
Retailer 5$5,567 USD

44 data points across 6 retailers

11 retailers$3,210 USD to $5,567 USD

B+
Cheapest Retailer
-
$3,210 USD
Retailer 2
-
$3,338 USD
View
Price last confirmed 29 days ago
Retailer 3
-
$3,338 USD
View
Price last confirmed 29 days ago
B+
Retailer 4
-
$3,412 USD
View
Retailer 5
-
$3,466 USD
View
Price last confirmed 38 days ago
Retailer 6
-
$3,852 USD
View
Price last confirmed 38 days ago
B
Retailer 7
-
$3,877 USD
View
B+
Retailer 8
-
$3,886 USD
View
B
Retailer 9
-
$4,074 USD
View
B
Retailer 10
-
$5,567 USD
View
Most Expensive
NZ Jewellers
335be264-81b7-4ae0-b9b7-ad49c3fbd800 · Sep 26
$5,816 USD
View
Price last confirmed 40 days ago
10 more retailers have this diamond
Prices start from $3,210 USDSave up to $2,357 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+
1.40ct Round
$3,210 USD