CaratHunter
Plans
Radiant|Natural|GIA

1.25ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 6551309782

Certificate GIA 6551309782

Diamond specifications and retailer prices

From $2,034 SGD
As of November 6, 2026
Save $2,632 SGD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,630 SGD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.25ct natural radiant diamond

This 1.25ct natural radiant 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 6551309782. Listed at 16 retailers as of November 1, 2026, with a 129% 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

1.25
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551309782
Dimensions7.21 × 5.33 × 3.60 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.21 mm5.33 mm1.25 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551309782
Side View
Table 67.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.5%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $2,256 SGD|Low: $1,984 SGD|High: $4,923 SGD|Avg: $2,863 SGD|-13.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 4$2,034 SGD
Retailer 12$2,252 SGD
Retailer 13$2,254 SGD
Retailer 1$2,256 SGD
Retailer 8$2,281 SGD
Retailer 11$2,370 SGD
Retailer 2$2,499 SGD
Retailer 5$2,602 SGD
Retailer 7$2,650 SGD
Retailer 3$2,952 SGD
Retailer 10$3,287 SGD
Retailer 9$3,622 SGD
Retailer 14$4,081 SGD
Retailer 6$4,666 SGD

37 data points across 14 retailers

16 retailers$2,034 SGD to $4,666 SGD

A
Cheapest Retailer
-
$2,034 SGD
A
Retailer 2
-
$2,252 SGD
View
Final sale: no returns
A
Retailer 3
-
$2,254 SGD
View
A
Retailer 4
-
$2,256 SGD
View
A
Retailer 5
-
$2,281 SGD
View
A
Retailer 6
-
$2,370 SGD
View
A
Retailer 7
-
$2,499 SGD
View
A
Retailer 8
-
$2,602 SGD
View
A
Retailer 9
-
$2,650 SGD
View
A
Retailer 10
-
$2,722 SGD
View
A
Retailer 11
-
$2,952 SGD
View
A
Retailer 12
-
$3,287 SGD
View
A
Retailer 13
-
$3,622 SGD
View
B+
Retailer 14
-
$4,081 SGD
View
B+
Retailer 15
-
$4,666 SGD
View
Most Expensive
NZ Jewellers
b4f77107-2584-40c9-9b49-88b7a2938865 · Sep 25
$5,630 SGD
$4,393 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from $2,034 SGDSave up to $2,632 SGD

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 Radiant
$2,034 SGD