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Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 5516329413

Certificate GIA 5516329413

Diamond specifications and retailer prices

From $4,502 SGD
A$5,418 AUD
As of November 1, 2026
Save $1,669 SGD (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $6,170 SGD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5516329413. Listed at 3 retailers as of November 1, 2026, with prices from $4,502 to $6,170, a $1,669 spread on the same certified stone. 77 Diamonds lists it at $6,170. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5516329413
Dimensions6.86 × 5.44 × 3.52 mm
L/W Ratio1.26
Top View
6.86 mm5.44 mm1.21 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5516329413
Side View
Table 73.0%CrownGirdlePavilionCuletDepth 64.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: $6,170 SGD|Low: $4,502 SGD|High: $6,222 SGD|Avg: $5,234 SGD|+4.1%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2$4,502 SGD
Retailer 3$4,541 SGD
77 Diamonds$6,170 SGD

37 data points across 3 retailers

3 retailers$4,502 SGD to $6,170 SGD

B
Cheapest Retailer
-
$4,502 SGD
A$5,418 AUD
B
Retailer 2
-
$4,541 SGD
CA$4,934 CAD
View
Most Expensive
C
77 Diamonds
RADMBXYNFYQEZ · Nov 1
$6,170 SGD
£3,801 GBP
View
2 more retailers have this diamond
Prices start from $4,502 SGDSave up to $1,669 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.

B
1.21ct Radiant
$4,502 SGD