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1.77ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG589389041

Shape and cutting style on the report: Round brilliant

Certificate IGI LG589389041

Diamond specifications and retailer prices

From $371 NZD
$209 USD
As of October 29, 2026
Save $3,201 NZD (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,572 NZD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.77ct lab-grown round diamond

This 1.77ct 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 IGI LG589389041 or 589389041. Listed at 10 retailers as of October 29, 2026, with prices from $371 to $3,572, a $3,201 spread on the same certified stone. Do Amore Diamonds lists it at $3,572. 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

1.77
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589389041
Dimensions7.73 × 7.69 × 4.81 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.73 mm7.69 mm1.77 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589389041
Side View
Table 56.0%Crown 34.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.3%

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: Oct 29
Current: $3,572 NZD|Low: $307 NZD|High: $3,661 NZD|Avg: $1,522 NZD|-2.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8$371 NZD
Retailer 10$421 NZD
Retailer 6$432 NZD
Retailer 5$793 NZD
Retailer 7$1,397 NZD
Retailer 3$1,488 NZD
Retailer 4$1,637 NZD
Retailer 9$1,884 NZD
Retailer 2$2,052 NZD
Do Amore Diamonds$3,572 NZD

20 data points across 10 retailers

10 retailers$371 NZD to $3,572 NZD

A
Cheapest Retailer
-
$371 NZD
$209 USD
A
Retailer 2
-
$421 NZD
$237 USD
View
Final sale: no returns
A
Retailer 3
-
$432 NZD
$243 USD
View
B+
Retailer 4
-
$793 NZD
$446 USD
View
B+
Retailer 5
-
$1,397 NZD
$786 USD
View
Retailer 6
-
$1,488 NZD
$837 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,637 NZD
$921 USD
View
B
Retailer 8
-
$1,884 NZD
$1,060 USD
View
B
Retailer 9
-
$2,052 NZD
£909 GBP
View
Most Expensive
B
Do Amore Diamonds
27-67326A655 · Oct 29
$3,572 NZD
$2,010 USD
View
9 more retailers have this diamond
Prices start from $371 NZDSave up to $3,201 NZD

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
1.77ct Round
$371 NZD