Round|Natural|GIA

1.40ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2558103659

Certificate GIA 2558103659

Diamond specifications and retailer prices

From $1,651 USD
As of November 4, 2026
Save $3,043 USD (65%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,884 USD at NZ Jewellers · As of September 25, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558103659. Listed at 14 retailers as of November 4, 2026, with a 184% 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
M
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2558103659
Dimensions7.12 × 7.06 × 4.45 mm
L/W Ratio1.01
Top View
7.12 mm7.06 mm1.40 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2558103659
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: $4,694 USD|Low: $1,638 USD|High: $4,884 USD|Avg: $2,585 USD|-3.9%
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
November 6, 2026
Retailer 10$1,651 USD
Retailer 12$1,825 USD
Retailer 8$2,073 USD
Retailer 2$2,208 USD
Retailer 3$2,255 USD
Retailer 13$2,274 USD
Retailer 11$2,336 USD
Retailer 4$2,410 USD
Retailer 7$2,467 USD
Retailer 5$2,740 USD
Retailer 6$2,740 USD
Retailer 9$3,351 USD
NZ Jewellers$4,694 USD

39 data points across 13 retailers

14 retailers$1,651 USD to $4,694 USD

A
Cheapest Retailer
-
$1,651 USD
Retailer 2
-
$1,825 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$2,073 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,208 USD
View
B+
Retailer 5
-
$2,255 USD
View
B+
Retailer 6
-
$2,274 USD
View
B+
Retailer 7
-
$2,325 USD
View
B+
Retailer 8
-
$2,336 USD
View
B+
Retailer 9
-
$2,410 USD
View
B+
Retailer 10
-
$2,467 USD
View
B
Retailer 11
-
$2,740 USD
View
B
Retailer 12
-
$3,351 USD
View
B
Retailer 13
-
$4,694 USD
View
Most Expensive
NZ Jewellers
24342ae1-9916-4907-a630-cfa04c6aec93 · Sep 25
$4,884 USD
View
Price last confirmed 41 days ago
13 more retailers have this diamond
Prices start from $1,651 USDSave up to $3,043 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 Round
$1,651 USD