Round|Natural|GIA

1.25ct K IF Round Natural Diamond

EX • K/IF • GIA 2506628818

Certificate GIA 2506628818

Diamond specifications and retailer prices

From $3,467 USD
As of November 6, 2026
Save $1,646 USD (32%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,113 USD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 2506628818. Listed at 6 retailers as of November 5, 2026, with prices from $3,467 to $5,113, a $1,646 spread on the same certified stone. 77 Diamonds lists it at $5,113. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
K
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2506628818
Dimensions6.90 × 6.85 × 4.25 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
6.90 mm6.85 mm1.25 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2506628818
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $5,113 USD|Low: $3,467 USD|High: $5,561 USD|Avg: $4,337 USD|-5.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4$3,467 USD
Retailer 3$3,480 USD
Retailer 5$3,536 USD
Retailer 6$3,719 USD
Retailer 2$4,805 USD
77 Diamonds$5,113 USD
Retailer 7$5,559 USD

38 data points across 7 retailers

6 retailers$3,467 USD to $5,113 USD

A
Cheapest Retailer
-
$3,467 USD
A
Retailer 2
-
$3,480 USD
View
A
Retailer 3
-
$3,536 USD
View
A
Retailer 4
-
$3,719 USD
View
B+
Retailer 5
-
$4,805 USD
View
Most Expensive
B+
77 Diamonds
RBMBPNADVEVC · Nov 5
$5,113 USD
£4,026 GBP
View
5 more retailers have this diamond
Prices start from $3,467 USDSave up to $1,646 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
1.25ct Round
$3,467 USD