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Round|Lab Grown|GIA

1.70ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • GIA 2221720373

Certificate GIA 2221720373

Diamond specifications and retailer prices

From $873 SGD
$683 USD
As of November 2, 2026
Save $1,683 SGD (66%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,557 SGD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2221720373. Listed at 3 retailers as of November 1, 2026, with prices from $873 to $2,557, a $1,683 spread on the same certified stone. The Diamond Guys lists it at $2,557. 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

1.70
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginLab Grown
Grading LabGIA
CertificateGIA 2221720373
Dimensions7.69 × 7.66 × 4.70 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.69 mm7.66 mm1.70 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2221720373
Side View
Table 60.0%Crown 34°Girdle: NUL-NULPavilion 41.4°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $971 SGD|Low: $971 SGD|High: $2,557 SGD|Avg: $2,150 SGD
Retailer 1
Retailer 2
The Diamond Guys
October 29, 2026
Retailer 1$971 SGD
Retailer 2$1,932 SGD
The Diamond Guys$2,557 SGD

3 data points across 3 retailers

3 retailers$873 SGD to $2,557 SGD

B+
Cheapest Retailer
-
$873 SGD
$683 USD
B
Retailer 2
-
$1,932 SGD
CA$2,099 CAD
View
Most Expensive
B
The Diamond Guys
1779252904 · Nov 1
$2,557 SGD
$1,999 USD
View
2 more retailers have this diamond
Prices start from $873 SGDSave up to $1,683 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+
1.70ct Round
$873 SGD