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Marquise|Natural|GIA

1.21ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 1558196256

Certificate GIA 1558196256

Diamond specifications and retailer prices

From $6,594 SGD
As of November 5, 2026
Save $1,663 SGD (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $8,257 SGD at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558196256. Listed at 3 retailers as of November 5, 2026, with prices from $6,594 to $8,257, a $1,663 spread on the same certified stone. 77 Diamonds lists it at $8,257. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.51°
Pavilion angle41.34°
OriginNatural
Grading LabGIA
CertificateGIA 1558196256
Dimensions9.88 × 5.41 × 3.63 mm
L/W Ratio1.83
Culet sizeNone
Top View
9.88 mm5.41 mm1.21 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558196256
Side View
Table 64.0%Crown 41.51°Girdle: STK-VTKPavilion 41.34°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,257 SGD|Low: $3,540 SGD|High: $8,542 SGD|Avg: $6,143 SGD|+1.1%
77 Diamonds
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 7, 2026
Retailer 3$3,540 SGD
Retailer 10$4,825 SGD
Retailer 7$5,034 SGD
Retailer 12$5,188 SGD
Retailer 5$5,674 SGD
Retailer 8$6,004 SGD
Retailer 13$6,011 SGD
Retailer 11$6,059 SGD
Retailer 6$6,594 SGD
Retailer 2$7,667 SGD
Retailer 9$7,855 SGD
77 Diamonds$8,257 SGD
Retailer 4$8,542 SGD

36 data points across 13 retailers

3 retailers$6,594 SGD to $8,257 SGD

B
Cheapest Retailer
-
$6,594 SGD
C
Retailer 2
-
$7,667 SGD
View
Most Expensive
C
77 Diamonds
MQMBY8VBCHFH · Nov 7
$8,257 SGD
£5,073 GBP
View
2 more retailers have this diamond
Prices start from $6,594 SGDSave up to $1,663 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 Marquise
$6,594 SGD